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/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */ |
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import XLSX from 'xlsx'; |
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import React, { Component } from 'react'; |
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import { AppRegistry, StyleSheet, Text, View, Button, Alert, Image, ScrollView, TouchableWithoutFeedback } from 'react-native'; |
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import { Table, Row, Rows, TableWrapper } from 'react-native-table-component'; |
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// react-native-fs |
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import { writeFile, readFile, DocumentDirectoryPath } from 'react-native-fs'; |
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const DDP = DocumentDirectoryPath + "/"; |
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const input = res => res; |
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const output = str => str; |
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// react-native-fetch-blob |
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/* |
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import RNFetchBlob from 'react-native-fetch-blob'; |
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const { writeFile, readFile, dirs:{ DocumentDir } } = RNFetchBlob.fs; |
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const DDP = DocumentDir + "/"; |
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const input = res => res.map(x => String.fromCharCode(x)).join(""); |
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const output = str => str.split("").map(x => x.charCodeAt(0)); |
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*/ |
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const make_cols = refstr => Array.from({length: XLSX.utils.decode_range(refstr).e.c + 1}, (x,i) => XLSX.utils.encode_col(i)); |
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const make_width = refstr => Array.from({length: XLSX.utils.decode_range(refstr).e.c + 1}, () => 60); |
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export default class SheetJS extends Component { |
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constructor(props) { |
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super(props); |
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this.state = { |
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data: [[1,2,3],[4,5,6]], |
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widthArr: [60, 60, 60], |
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cols: make_cols("A1:C2") |
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}; |
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this.importFile = this.importFile.bind(this); |
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this.exportFile = this.exportFile.bind(this); |
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}; |
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importFile() { |
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Alert.alert("Rename file to sheetjs.xlsx", "Copy to " + DDP, [ |
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{text: 'Cancel', onPress: () => {}, style: 'cancel' }, |
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{text: 'Import', onPress: () => { |
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readFile(DDP + "sheetjs.xlsx", 'ascii').then((res) => { |
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/* parse file */ |
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const wb = XLSX.read(input(res), {type:'binary'}); |
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/* convert first worksheet to AOA */ |
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const wsname = wb.SheetNames[0]; |
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const ws = wb.Sheets[wsname]; |
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const data = XLSX.utils.sheet_to_json(ws, {header:1}); |
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/* update state */ |
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this.setState({ data: data, cols: make_cols(ws['!ref']), widthArr: make_width(ws['!ref']) }); |
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}).catch((err) => { Alert.alert("importFile Error", "Error " + err.message); }); |
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}} |
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]); |
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} |
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exportFile() { |
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/* convert AOA back to worksheet */ |
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const ws = XLSX.utils.aoa_to_sheet(this.state.data); |
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/* build new workbook */ |
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const wb = XLSX.utils.book_new(); |
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XLSX.utils.book_append_sheet(wb, ws, "SheetJS"); |
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/* write file */ |
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const wbout = XLSX.write(wb, {type:'binary', bookType:"xlsx"}); |
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const file = DDP + "sheetjsw.xlsx"; |
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writeFile(file, output(wbout), 'ascii').then((res) =>{ |
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Alert.alert("exportFile success", "Exported to " + file); |
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}).catch((err) => { Alert.alert("exportFile Error", "Error " + err.message); }); |
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}; |
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render() { return ( |
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<ScrollView contentContainerStyle={styles.container} vertical={true}> |
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<Text style={styles.welcome}> </Text> |
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<Image style={{width: 128, height: 128}} source={require('./logo.png')} /> |
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<Text style={styles.welcome}>SheetJS React Native Demo</Text> |
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<Text style={styles.instructions}>Import Data</Text> |
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<Button onPress={this.importFile} title="Import data from a spreadsheet" color="#841584" /> |
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<Text style={styles.instructions}>Export Data</Text> |
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<Button disabled={!this.state.data.length} onPress={this.exportFile} title="Export data to XLSX" color="#841584" /> |
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<Text style={styles.instructions}>Current Data</Text> |
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<ScrollView style={styles.table} horizontal={true} > |
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<Table style={styles.table}> |
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<TableWrapper> |
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<Row data={this.state.cols} style={styles.thead} textStyle={styles.text} widthArr={this.state.widthArr}/> |
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</TableWrapper> |
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<TouchableWithoutFeedback> |
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<ScrollView vertical={true}> |
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<TableWrapper> |
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<Rows data={this.state.data} style={styles.tr} textStyle={styles.text} widthArr={this.state.widthArr}/> |
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</TableWrapper> |
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</ScrollView> |
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</TouchableWithoutFeedback> |
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</Table> |
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</ScrollView> |
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</ScrollView> |
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); }; |
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}; |
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const styles = StyleSheet.create({ |
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container: { flex: 1, justifyContent: 'center', alignItems: 'center', backgroundColor: '#F5FCFF' }, |
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welcome: { fontSize: 20, textAlign: 'center', margin: 10 }, |
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instructions: { textAlign: 'center', color: '#333333', marginBottom: 5 }, |
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thead: { height: 40, backgroundColor: '#f1f8ff' }, |
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tr: { height: 30 }, |
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text: { marginLeft: 5 }, |
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table: { width: "100%" } |
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}); |
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AppRegistry.registerComponent('SheetJS', () => SheetJS); |
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Otaku-Projects /
AngularJS-CRUD-PHP
